The simplest appetising dish I can think of would be soup. First you're going to want to set some finely chopped onions frying gently in a pan with only a little oil. While these are softening, crush a clove or two of garlic and sling these in. Next cube up about half your tin of SPAM and toss that into the oil on a high heat. If you have any paprika add it now. Once all this is fried up reasonably crunchy pour in a bunch of red lentils and some stock (lamb stock works best). Add a half teaspoon of peanut butter and stir. Simmer, while adding water and stirring until you have a thick soup - about half an hour.
My rice and SPAM was great, btw.